IT947374B - Disposizione circuitale per un impianto telefonico a comandi cen tralizzati specie per un impianto telefonico derivato con linee di allacciamento che fanno capo ad apparecchi di utente e trasmetto no segnali in corrente continua o segnali a frequenza fonica e se gnali video - Google Patents

Disposizione circuitale per un impianto telefonico a comandi cen tralizzati specie per un impianto telefonico derivato con linee di allacciamento che fanno capo ad apparecchi di utente e trasmetto no segnali in corrente continua o segnali a frequenza fonica e se gnali video

Info

Publication number
IT947374B
IT947374B IT2031572A IT2031572A IT947374B IT 947374 B IT947374 B IT 947374B IT 2031572 A IT2031572 A IT 2031572A IT 2031572 A IT2031572 A IT 2031572A IT 947374 B IT947374 B IT 947374B
Authority
IT
Italy
Prior art keywords
signals
telephone
tralyzed
cen
video
Prior art date
Application number
IT2031572A
Other languages
English (en)
Italian (it)
Original Assignee
Siemens Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of IT947374B publication Critical patent/IT947374B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/521—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements using semiconductors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
IT2031572A 1971-02-11 1972-02-08 Disposizione circuitale per un impianto telefonico a comandi cen tralizzati specie per un impianto telefonico derivato con linee di allacciamento che fanno capo ad apparecchi di utente e trasmetto no segnali in corrente continua o segnali a frequenza fonica e se gnali video IT947374B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712106390 DE2106390C3 (de) 1971-02-11 1971-02-11 Schaltungsanordnung für eine zentral gesteuerte Fernmelde-, insbesondere Fernsprechnebenstellenanlage, mit angeschlossenen Impuls- und Tastwahlteilnehmerstationen

Publications (1)

Publication Number Publication Date
IT947374B true IT947374B (it) 1973-05-21

Family

ID=5798410

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2031572A IT947374B (it) 1971-02-11 1972-02-08 Disposizione circuitale per un impianto telefonico a comandi cen tralizzati specie per un impianto telefonico derivato con linee di allacciamento che fanno capo ad apparecchi di utente e trasmetto no segnali in corrente continua o segnali a frequenza fonica e se gnali video

Country Status (9)

Country Link
AT (1) AT316659B (xx)
BE (1) BE779286A (xx)
CH (1) CH540615A (xx)
DE (1) DE2106390C3 (xx)
FR (1) FR2126772A5 (xx)
GB (1) GB1370063A (xx)
IT (1) IT947374B (xx)
LU (1) LU64757A1 (xx)
NL (1) NL7201849A (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500247B1 (fr) * 1981-02-13 1987-12-24 France Etat Concentrateur-distributeur optique matriciel

Also Published As

Publication number Publication date
FR2126772A5 (xx) 1972-10-06
NL7201849A (xx) 1972-08-15
LU64757A1 (xx) 1972-07-04
GB1370063A (en) 1974-10-09
CH540615A (de) 1973-08-15
BE779286A (fr) 1972-08-11
DE2106390C3 (de) 1975-08-21
DE2106390A1 (de) 1972-08-24
DE2106390B2 (de) 1975-01-02
AT316659B (de) 1974-07-25

Similar Documents

Publication Publication Date Title
IT971906B (it) Disposizione circuitale per linee di allacciamento di utente con due linee a circuito bifilare simmetri che per la trasmissione supplemen tare di segnali specie per videote lefoni
IT947374B (it) Disposizione circuitale per un impianto telefonico a comandi cen tralizzati specie per un impianto telefonico derivato con linee di allacciamento che fanno capo ad apparecchi di utente e trasmetto no segnali in corrente continua o segnali a frequenza fonica e se gnali video
IT987525B (it) Dispositivo per la trasmissione di segnali video e audio in un impianto vedeocitofonico
CH396994A (fr) Transducteur convertissant des signaux électriques en ondes sonores ou vice versa
CA735035A (en) Telephone call progress recording system
IT969929B (it) Disposizione circuitale per appa recchi di utente alimentati attra verso le loro linee di allacciamen to e dotati di dispositivi supple mentari in impianti di telecomuni cazioni specie in impianti tele fonici
CA683540A (en) Telephone answering and recording system
BE607760R (fr) Perfectionnements aux systèmes d'intercommunication
GB1202741A (en) Telephone system and signal conversion apparatus therefor
CA594844A (en) Telephone conference system
CA672281A (en) Dial telephone number recorder reproducer
CA635395A (en) Call data recording telephone system
FR1287451A (fr) Perfectionnements aux têtes de connexion pour bougies d'allumage
CA657469A (en) Telephone cable test result recorder
AU267844B2 (en) Circuit arrangement for determining the number of telephone subscribers connected to party lines
CA730764A (en) Telephone answering equipment
AU265634B2 (en) Remotely disconnecting and connecting telephone subscribers' lines
CA737060A (en) Loud-speaking telephone
CA599246A (en) Circuit arrangement responsive to dialling signals and the like
BE780157A (fr) Cable telephonique
CA537992A (en) Telephone answering and recording devices
CA673868A (en) Two-way television over telephone lines
AU2275162A (en) Circuit arrangement for determining the number of telephone subscribers connected to party lines
FR1481165A (fr) Perfectionnements aux équipements téléphoniques
CA730770A (en) Remote telephone extension system